有一段代码:
@dp.message(Command("start"))
async def start(message: Message):
await db.add_user(message.from_user.id)
photo = FSInputFile("pic1.jpg")
message_text = "hi"
await bot.send_photo(message.chat.id, caption = message_text, photo=photo,
reply_markup=keyboard())
当我按下键盘按钮时,如何更改此消息中的照片?